HD 3346

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HD 3346
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 36m 46.441s[1]
Declination +44° 29′ 18.91″[1]
Apparent magnitude (V) 5.164
Characteristics
Spectral type K5III
U−B color index 1.97
B−V color index 1.6
Variable type suspected
Astrometry
Radial velocity (Rv) -32.8 km/s
Proper motion (μ) RA: -36.31 ± 0.21[1] mas/yr
Dec.: 31.96 ± 0.18[1] mas/yr
Parallax (π) 5.29 ± 0.30[1] mas
Distance 620 ± 30 ly
(190 ± 10 pc)
Absolute magnitude (MV) 6.789
Details
Mass 5[citation needed] M
Radius 46.27[citation needed] R
Luminosity 686.8[citation needed] L
Temperature 4350[citation needed] K
Other designations
HD 3346, SAO 36509, BD+43° 113, HIP 2900, HR 152.
Database references
SIMBAD data

HD 3346, also known as V428 Andromedae, is an orange giant star approximately 620 light-years away[1] in the constellation of Andromeda.

Possible planetary system[edit]

In 1996 it was announced that the variations in radial velocity of this star were larger than expected. A planetary system was proposed to explain this variation.[2][3]

The HD 3346 system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b (unconfirmed) 10 MJ 0.3 30.0 0
c (unconfirmed) 60 MJ 2.5 650 0.00

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ Noyes, R. et al. (1996). "HD 3346". International Astronomical Union Circular (6316): 1. 
  3. ^ Bell, George H. (2001-04-05). "The Search for the Extrasolar Planets: A Brief History of the Search, the Findings and the Future Implications". Arizona State University. Retrieved 2008-07-16. 

External links[edit]